摘要: This invention relates to polyvinyl-alcohol compositions. There is a need in industry for materials having the great advantage which polyvinyl alcohol has of being inert toward hydrocarbon fuels and oils and organic solvents yet which has greater hardness, toughness, dimensional stability,......
Sodamide, sodamine, NaNH2, white solid, formed by reaction of sodium metal and dry NH3 gas at 350 °C (662 °F), or by solution of the metal in liquid ammonia. Reacts with carbon upon heating, to form sodium cyanide, and with nitrous oxide to form sodium azide, NaN3. General Desc...
A mild and efficient palladium-catalyzed allylation reaction with allylic alcohol is described. In situ activation of allylic alcohol was achieved using N,N-dimethylacetamide dimethyl acetal and simple palladium catalyst (Pd(PPh3)4). This reaction system does not require specially designed ligand, acid...
The substrate (34) always controlled the stereochemical outcome of the reaction, leading to a syn,anti-configured product 37. This result could not be remedied by oxidation of the generated C8 alcohol with DMP and reduction with NaBH4. Sign in to download hi-res image Scheme 7. ...
A process for producing an aromatic amine comprises heating an aromatic sulfonate and a metal amide in liquid ammonia in a closed reactor at a temperature of at least 40掳 C to produce a metal arylamide and reacting the resultant metal arylamide with water or lower aliphatic alcohol to ...
Amides are important intermediates in organic chemistry and the pharmaceutical industry, but their low reactivity requires catalysts and/or severe reaction conditions for esterification. Here, a novel approach was devised to convert amides into esters without the use of transition metals. The method effe...
[Objective] The research aimed to synthesize amide by using a simple synthesis method.[Method] With L-methionine and diamine compounds(ethyl diamine,1,6-hexamethylenediamine and piperazine) as materials and anhydrous alcohol as solvent,amide was synthesized through salt forming reaction and heat treatm...
acitrus fruits may be eaten alone,unless the patient experiences a reaction such as itching,rash or hypersensitivity of any kind. 除非患者体验反应例如发痒,种类,其中任一疹或者过敏症柑橘水果也许单独被吃。[translate] amoving in the world or sensing the movements of other entities, is employed to ...
β-Hydroxy alkylamide reacts with carboxylic acid to form an ester much faster than with a normal alcohol. Many suggestions have been made to describe the mechanism of this reaction, but none of them have been proved. It is clear that this reaction cannot be seen as a normal esterification...
药明康德培训教材level3题目-Weinreb Amide Multiple Choices:1.Which are the two most important applications of Weinreb amide in synthesis?( )A.synthesis of ketone B.synthesis of ester C.synthesis of aldehyde D.synthesis of alcohol 2. Which reagents do you think will work in the following Weinreb ...